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Al's Collimation Aid (for imaging)
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21-11-2015, 07:53 AM
sheeny
(Al)
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Join Date: Jun 2005
Location: Oberon NSW
Posts: 14,302
Secondary for sure. I've had a couple of schmidt-cassegrains and the primary is not adjustable on them, but I'm not familiar with an RC.
Play with the secondary to start with, and see if you can get good collimation.
Al.
sheeny
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